Scientists say putting a price on climate-warming carbon dioxide generated by fossil fuels where it is burned may not be the most effective way to calculate carbon emissions' cost.

Social networking meets energy efficiency in Facebook app done with Opower and the Natural Resources Defense Council that lets people compare energy use to friends and the national average.

Underwear makers Triumph International and Wacoal have been recycling used brassieres to make industrial fuel.

Originally posted at Crave

With political paralysis and the turmoil of Solyndra in Washington, states are taking the lead on green technology action, pitting individual states against other countries.

An American team hasn't won the international solar car race since GM took home the trophy in 1987. But a lighter, faster car could give the University of Michigan the edge it needs to cross the line first.

Originally posted at The Car Tech blog

Solar-tower maker BrightSource plans its largest project yet, a 750-megawatt power plant in the California desert able to supply enough power for 300,000 homes.

General Electric plans to build the largest solar panel manufacturing plant in the U.S. which will produce 400 megawatts worth of thin-film panels aimed at utilities and commercial customers.

Half of the famed tech investor's new fund is earmarked for clean tech, with the other half going to Internet and mobile technologies.

Brian Harrison, who was CEO when Solyndra declared bankruptcy and shut down, has resigned "as scheduled," the company says in court filings.

Just how eager are investors to bet on filtered office water coolers that don't use water jugs?